User type vs Django groups

i am trying to build a web app where people register and join either the free Gold and silver membership. The number of posts that can be made by each user is depends if he is a free, gold or silver user. which method will be best to implement this. The django groups or user type.
remember that each of this users will have to log in and be able to join or change membership from there dashboard. pls your help will be really appreciated.

(Recategorized from the Django Internals category - this post is not related to making changes or contributions to the Django project.)
This is also a duplicate of an existing thread - to keep all relevant information regarding this concept together, please continue this discussion on the existing thread at Django membership project

aww i got it. thank you